Change=given-cost
cost=total cost=cost for all of them added together
cost=popcorn+small drink+fruit snacks
cost=4+3+5
cost=12

given=x
change=3

3=x-12
that is the equation
solve
add 12 to both sides
15=x
he gave $15 to the cashier

3 0

4 years ago

X^2+5x-9=5 which of the following values of x satisfies the equation above?

katrin2010 [14]

It’s -7 because -7^2= 49-35-9=5

5 0

3 years ago

Rationalize 1/√18<br><br> Will Mark as Brainliest for the best

Llana [10]

Answer:

$\frac{\sqrt{2} }{6}$

Step-by-step explanation

$\frac{1}{\sqrt{18} } \\\frac{1}{\sqrt{18} } *\frac{\sqrt{18} }{\sqrt{18} } \\\frac{1*\sqrt{18} }{(\sqrt{18} )^2} \\\frac{1\sqrt{18} }{18} \\\frac{3\sqrt{2} }{18} \\\frac{\sqrt{2} }{6}$

8 0

3 years ago

Your hourly salary increased from $13 to $20. What is the percent increase in your salary?

iVinArrow [24]

The percent increase in your salary is 53.8%

<h3>What is the percent increase in your salary?</h3>

The given parameters are:

Initial = $13

Final = $20

The percent increase in your salary is calculated as:

Percent Increase = (Final - Initial)/Initial * 100%

So, we have:

Percent Increase = (20- 13)/13* 100%

Evaluate

Percent Increase = 53.8%

Hence, the percent increase in your salary is 53.8%